21 minutes ago, Hedgehobbit said:The problem with using the "model's eye" viewpoint to determine cover is that units are firing as a group and not model to model. A target model more than 50% obscured from one attacking model might be completely clear to another attacking model. The attacking unit leader is considered to be the center of mass for the firing unit, thus it makes sense to use his base as a rough guideline but not to use his viewpoint entirely to determine the cover status of the entire target unit.
Hence, target models that are not visible at all to the attacking unit leader can still be shot and killed if at least one attacking model can see ANY part of the target model.
The unit leader is used to determine two things:
Range to a defender
Cover of of a defender.
The only reason you would need to check the LOS from other models then the unit leader is if there is a chance some of them may not have LOS at all to the defender in which case they cannot contribute their attack dice to the attackpool. It has no impact on the cover status of a defender, as above cover is only based on the LOS of the unit leader of the attacker.
this is similar to how in the defending unit, any models who are completely out of sight to ALL attacking models cannot be assigned wounds from the attack.